Path: utzoo!attcan!uunet!snorkelwacker!bionet!ARSUN.UTAH.EDU!rogers
From: rogers@ARSUN.UTAH.EDU (Alan R. Rogers)
Newsgroups: bionet.population-bio
Subject: phylogenetic autocorrelation
Message-ID: <9005301708.AA01812@arsun.utah.edu>
Date: 30 May 90 17:08:23 GMT
Sender: daemon@genbank.BIO.NET
Lines: 29

I share Felsenstein's skepticism about the method, but that skepticism does
not seem to be supported by the simulations I have been doing.  Cheverud,
Dow, and Leutenegger do argue that all the information will be in the
specific component, and none in the phylogenetic component.  I didn't believe
this either, but the results are as they claim.  Here is a plot of the
estimated phylogenetic correlation against the true value:
     1 ......................................................................
     . .  ****** ****** **** *********************************************  .
     0 .   *   *   ***** ** ** ** ************** **** *********** **** *    .
     0 .        ** *     * * * *  *  ** **  * * **   ***  **** * * * *  *   .
     . .       **    ***    * * ***   *  **  *      * **   ** * *           .
  r  5 .      *    **  ** *** **  * *  *  * *  **  ***  **    *     ** *    .
  .  0 .      ** ** *  ** ** *    *   *****   *  *  * ********  *           .
  p  . .         * *   ***   *  *  **    **   ******  *   * ***   ** *  *   .
  h  0 .     **   ***   **    ***  *** *   ** *   *  *  *  **  *   *        .
  y    .       *******   **  *     * ** **   *       * *   *                .
       .        *  *  * **   * * *   ***    *  ***  *** **  * ** * *  *     .
       .    ** ** ****** * ** * **  ***   *** ** ** * ** *    **   *        .
     - .    ****** ** ********** ***** *  **** ************* *** **  *      .
     1 .  ********************************** ***** *********** *** *******  .
     . ......................................................................
     0  -1.0            -0.5             0.0            0.5             1.0

                                         rho

Alan Rogers
 INTERNET: rogers@arsun.utah.edu
 USMAIL  : Dept. of Anthropology, Univ. of Utah, S.L.C., UT 84112
 PHONE   : (801) 581-5529